2007.5-2010 Chevrolet GMC LMM 6.6L Duramax Diesel Exhaust Up-Pipe Generic


SKU: C138-B023~005

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Significant reduction in exhaust back pressure 50% more flow over stock
Free-flowing stainless steel inner liner bellows
Stainless steel 11-gauge .120-inch wall, 2-inch OD Up-Pipes
Direct bolt-on replacement to factory manifolds
Passenger side pipe is purposely indented for firewall clearance
Faster turbo response

Condition:100% Brand New
Materials: Stainless Steel

Fitment For:
For 2001-2004 Chevrolet GMC LB7 6.6L Duramax Diesel
For 2004-2006 Chevrolet GMC LLY 6.6L Duramax Diesel
For 2006-2007 Chevrolet GMC LBZ 6.6L Duramax Diesel
For 2007.5-2010 Chevrolet GMC LMM 6.6L Duramax Diesel
For 2011-2016 Chevrolet GMC LML 6.6L Duramax Diesel

Package Included:
2 x Pipes
4 x Gaskets
12 x Bolts
12 x Nuts

Shipping Information:
Delivery Time: 3-8 business days.
Free Quick Shipping From California.

Customer Notification and Disclaimer of Liability.
This is a race-only product. It is not legal for sale or use on pollution controlled vehicles that are driven on public streets, roads, or highways. Buyer's use or installation of this product for itself or for Buyer's customer is at Buyer's own risk. The Buyer is responsible for obeying federal, state, and local laws. Only Buyer can determine end customer's use and thus assumes any and all liability hereby waiving any and all claims against UCarPart in the sale of this product to the maximum extent permissible by law. Make sure to abide by all local, state, and federal laws, including emissions, vehicle safety, and traffic laws. It is Buyer's responsibility to know what those laws are and how they apply to Buyer or Buyer's customer. This product is designed and intended solely for legally-organized and sanctioned, closed-course, off-road competition use and is not for use on public streets, roads, or highways. This Product is capable of disabling the emissions system on some vehicles. Use on public streets, roads, or highways is a violation of federal and certain state (including California) and local environmental laws.

Customer Reviews

Based on 40 reviews
Peter Lomba
Direct fit.

I'm surprised by its thickness exceeded my expectations. There were no issues removing the old one and installing the new one. It appears to be functioning properly. Moreover, the price was identical to that of Rock Auto, so I have no reason to complain.


Stainless steel, perfect match, and the car runs better, very satisfied!

Carlos Perez

It's incredible how much I enjoyed this exhaust, especially considering its price. The thickness and composition of the stainless steel make it highly weldable, while the mandrel bends are almost uniformly consistent. The stainless steel flanges and hangers welded flawlessly with the steel, and even galvanized mild steel pieces welded well with the tubing. The exhaust dissipates heat well, and the downstream O2 sensors had no temperature issues. The system is exceptionally durable, and I have enough leftover material to construct another system for a different vehicle. The packaging was sufficient, but not excessive. If you're searching for the perfect custom exhaust and desire enough material to experiment, then this is precisely what you should purchase.


This was an easy repair and is well worth the money.


No leaks so far and overall great quality!